Double duty snow plow



A. O. WILLIAMSON DOUBLE DUTY sNow PLow Filed April 25, 1958 .PML

Jan. 30, 1940.

Jan, 30, 1940. A o, W .AMSON 2,188,800

DOUBLE DUTY SNOW PLOW Filed April 25, 1958 2 Sheets-Sheet 2 PatentedJan. 30, 1940 IUpuffi-1D, ksrigriries rATENT orf-FICE 14 Claims.

This invention relates f to ea fsnow plow :and particularly toa snowlplow constructed and arranged tov-act .asa plain push plow when thesnowisof .small depth and alsoto act as a rotary vt plow when the snowis of great depth.

In .the ordinary practice of clearing roadsif thesnow is'not voffgreatdepth a push-plow is used. .Such a plow' has a-moldboard withlateriallyand rearwardly extending curved -surfaces designed to move thesnow to the Vsides of the Yroad.zand discharge thevsame fromthe road..Suchplowszcan be'tmoved-'along the road at com- ,parativelyhighspeedswhen the fall of'snow is not heavy. When the fall of snowis heavyand xthexsnow has accumulated in'y considerable depth uponftheiroadandwhere drifts of considerable .depths l,have'zformed .it necessary tohave .a :power plow .or arotaryyplowtomove thesnow. Such,lpowerorrotaryplows. have heretofore been entirely lseparate, unitsfromfthe push plows and only .brought .into service'when considerabledepths of, snow were encountered.

.Asiabovefstated it 4isanA objecty of this. inven-A .tiontogg'provide .aplow'fwhich mightbe called a doublezduty plow .and one constructed andar- Vrangedto act bothasarpush plow and as a power rotary plow.

It is another object of the invention to provide asnowplow havingra;moldboard with laterally and f rearwardly extending curved surfaces formoving anddischarging; snow if the snow is not of 'great` depth, saidmoldboard having atfa considerable height and adjacent the `top thereofrotary conveyors which will engage and remove ythesnow if the snowiisofigreat depth.

1t is a further object of .the invention to-provide a chamber to whichthe snowis-moved by said conveyors, means for discharging snow from saidchamber, a deflector for directing the snow 40 to one side lof the roador the other and-means `for driving said kmeansin opposite directionsrevspectivelyin accordance with the position of said deflector. c

VYIt is/still another object of the invention to construction adapted tobe propelledby a vehicle together with means for vdriving the loperatingparts from a Amotor on saidgpropelling vehicle.

These and other objects. and .advantages of the invention will befullyset forth in the following description made in connection with theaccompanying drawings in which like reference characters refer fto'similar parts throughout the several views and in which: 1

Fig. lis a view for the mostpart in 'front elevavprovide a double dutyplow of simple and compact 1 v their outer ends inthe bearings Il.

tion ofthe plow, a portion thereof being shown y in vertical sectiontaken substantially on line l-I of Fig. 3 as indicated by the arrow, aportion of said plow also being broken away;

Fig.r 2 is for the most part atop plan view of f the plow, someipartsbeing shown in horizontal section taken substantially on line`2-2 ofFig. 3

as indicated by the arrow; y

Fig. 3 is a central vertical section through the l plow;

lcentral vertically extending .line or prow Hic.

Thesurface ofthe portions Illa. and lllb is somewhat curved as indicatedbythe outer-end lines in Fig. 2 and thesurfaces of portions lafand l'bare designed to movethe. snow laterally as the. plow is pushed forwardintothe snow, the Asnow thus moving outwardly and `rearwardly `alongsaid surfaces until it is finally `discharged atthe `outer end's of saidportionsand at one side or both sides of fthe road. Thesurfaces maand.lb extend upwardly for a considerable distance which in practice wouldbeover three feet. At or adjacent the tops of the moldboard portions Iliaand Ib eachportion is` providedwith a rearwardly extendingvsubstantially semi-cylindrical portion 10d yforming at its forward side,a subf stantially semi-cylindricalrecess or trough'which extends fromadjacent the center of the moldboard to the outer end thereof. A casingi we is formed at the central top portion of the-moldboard, `the samehaving bearings I 0f at either side thereof and bearingsll are providedyclosely adjacent the -outerends of the trough-shaped `portions 10d.Shafts I2 are journalled at their inner ends respectively in bearingsAIllf and at Said shafts have thereony helical blades VI2a forming'screw conveyors. A casing I3 is provided in the rear of moldboard l0 atthe center thereof and said casing has a chamber 13a therein with whichthe troughs formed by portions 10d communi-j cate.

ber I3a. Each shaft I2 has secured to its inner end a bevelled gear I4.It will be noted that bearings are provided for the shaft at either sideof gear I4 and while these bearingsmight be of various forms, in theembodiment of the invention illustrated they are shown as ball bearings.Each gear I4 meshes with another bevelled gear I5 carried on a shaft I8having bearings in portions of casing Ille and to the central part ofwhich issecured a spur pinion I1. Pinion I1 meshes with a large spurgear I8 forming an idler and carried on a short shaft I9 having bearingsat either side of gear I8 in the wall of casing IIIe. It will be seen inFig. 3 that casingl Ille has a rear wall Ig. A bearing member 28 issuitably secured in an opening in rear'wall Iy shown as havinglongitudinally spaced bearings fox' a shaft 2|. Shaft 2I has secured toits forward end a bevelled pinion 22 which meshes with a bevelled gear23 having secured thereto or integral therewith as shown in Fig. 6 aspur pinion 24 which meshes with and drives the spur gear I8. Gears 23and 24 have stub shafts or trunnions 25 journalled respectively inbearings 26 illustrated as ball bearings and carried in the sides ofcasing Ille. Shaft 2l at its other end is connectedby universal joint 21to a shaft 28 which has a splined portion 28a embraced by a short sleeve29 in turn connected'to a universal joint 38. Universal joint 30 will bevconnected to a shaft extending to or connected to a motor on thevehicle which propels the plow. The parts of the plow will thus bedriven by said motor and by the shaft connected to joint 38. Anothersmall gear or pinion 3I is disposed above and meshes with spur gear I8.This pinion has a shaft 32 extending at either sidel thereof andoppositely disposed bevelled gears 33 and 34 are carried on this shaftat either side of pinion 3l. Gears 33 and 34 have hub portions carriedin bearings disposed in plates or partitions 35 carried in a casing I 0hwhich has end sections secured respectively at opposite sides of casingIlle at the upper portion thereof as clearly shown in Fig. 1. Shaft 32has splined portions at either end on which are slidable clutch members38 and `31 respectively. Membersv 36 `and 31v have clutch teeth at theirinner ends adapted to engage with clutch teeth on the outer ends of thehubs of gears 33 and 34 respectively. Clutch forks 38 and 38 engage ingrooves formed in members 36 and 31 respectively andare secured to a rod48 slidable in bearings in plates 35. Rod 48 has a pin 40a projectinghorizontally therefrom and engaged by a fork at the lower end of aclutch lever 4I pivoted at 42 in the top of casing I 8h, said leverprojecting through and above said top and shown as having a ball at itsupper end. A bevelledpinion 43 meshes with gears 33 and 34 and issecured to a shaft 44 extending horizontally and rearwardly from vsaidpinion 43. VShaft 44 is journalled in spaced bearings illustrated asball bearings and disposed in a bearing sleeve 45 secured in rear wallIlly. Shaft 44 is connected by a 'coupling 48V to a'shaft 41 to which issecured a propeller 48 disposed in a substantially cylindrical rearportion of casing I3. Casing I3 hasa discharge opening |30 abovepropeller 48 and has upwardly rextending side portions |327 ofsubstantially triangular form adjacent the top or apex of which ispivoted a deflector 58 .havingA pivot members 5I supported in portions|312'. Shaft 41 is carried in bearings 5I disposed in a bearing casing52 secured yto thev rear side of the casing'V I3. "I'hebottom portion ofcasing' Ie'is shown at Ii and bulkhead plates 53 are disposed verticallyin the rear of the moldboard beneath bottom plate IUiand at somedistance at either side of the central portion of the plow, said platesextending to the rear side of said moldboard. 5

A vertical plate 80 extends transversely of the plow at the rear edgesof plates 53. An angle member 54 extends across thebottom of the plow inthe rear of the moldboard and has apertured lugs 55l adjacent its outerends to which push`l0 y bars will be connected. ShoesB-,are alsodisposed at thebottom of the moldboard at either side thereof andsecured to suitable vertical plates 51 having their rear portions turnedoutwardly as shown at 51a; A frontcentral shoe 58 l5 f is alsodisposedbeneath theforward portion of the moldboard and secured to angle`members 54. Apertured lugs 59 are also disposed in the rearr of themoldboard at points disposed some distance above the lugs 55, the samebeing secured 20 to plates 53 and these will lalso be lconnected to apush barv for propellingthe plow. 'Plates -62rfof general triangularform are provided at each side of the moldboard adjacent the rearthereof and'v are pivoted to pivots 6I secured in plates 51 at l25 thelower front corners thereof. Said plates may be disposed with theirlower surfaces horizontal as shown in the full line positionin Fig`.`3or'they. may be raised to dift'erent'positions by having bolts passtherethrough and through anyonefof-ff30 e the prow Ic.

In operation, `the plowwillbe pushed a1ong-35 Y' the road to be clearedby a propelling vehicle such as a truck or tractorandwill be propelledby push bars connectedto the lugs '.55 andf59. The plow'will ride on theshoes 56 and 584.1 Ulf,A the snow to be cleared is not deep and notoverle'o a depth of approximately two or three feetthe plow will be usedas a push plow." It will merely be pushed along the road with'shaft 28not driven. The snow will be engagedfby the moldboard and moved bytheside portions'thereof to'fe45 the side of the road and discharged at thesides of the road. The plow is comparatively light and ,y it'can bemoved and used as a push plow at comparatively high speed. Shouldsomedeep snow the plow. The snow will be discharged intov theigo chamberI 3a. As the snow accumulatesin said chamber it will be engaged bythe'propeller 48 and discharged at high velocity through opening I3c andwill be deflectedl by deflector 50v to'one side of the road. Thesnowwill be moved withisucient velocity to be well off the road. Propeller48 will be driven` in opposite directions depending on the position ofthe deector 50.

With the deflector' shown in the full line position in Fig. 5 thepropeller will move inja'clock- '70 wise direction. If the` deflectorismoved tothe dotted line position in Fig. 5 the propeller will bedriven in a counterclockwise direction. Y. The direction of drive ofpropeller .48 will be deterf mined by which' one of the' gears 33 orsais con-'75 manipulating'lever 4l. It will be notedthat the s lsnow isydischarged to either sideof the road in Vexactly the same manner andwith 'the samel force by having thedeflector 50 in one position or s l syarfssgsoo nested` to the shaft' by engaging the clutch-memthe other. yy

. It willA be understood that as the plow is pushed forwardly thel snowis encountered and f divided r'by the-prowl-portion or plate ilicvandthe lower` shoev 63. The/snow thenA movesjrearwardly on the portionsvIlla. and. Mb. The `plates GZUfare provdedso that thel snow willybe cutyatfthe .frearand outersides of the moldboard. As deuse of the plates aclean cut and a substantially "verticalror slightly inclined bank 'is'insured.

scribed these plates may be raised to diierent positions. By cutting thesnow with these plates s ya clean swath is insured. `Without saidAplates ,the router end of the moldboard would merely scrape along thesnow and the vsnow would be broken and left in irregular formation.` Bythe changes may be made in the form, details, ar-v s rangement andproportions of the parts, without departing from the,I scope ofapplicants invention, which generallyv stated, consists in a devicecapable of :carrying out the objects abovek set forth, Ain the parts andcombinationsvor parts disclosed and defined in the appended claims.

What is claimed is: l. A snow plow having a mold board extendingoutwardly and rearwardly from a central vertically extendingline',`sai`d moldboard extending upwardly for a` considerable distancewhereby .l

' said moldboard' if it is of` great depth and means for driving saidconveyors; y

2. A ysnow plow having a moldboard extending outwardly and rearwardlyfrom a central vertically extending line,l said moldboard extendingupwardly for afconsiderable distance whereby snow of small' depth may bedischarged laterally by said moldboard,said moldboard having rearwardlyextending substantially semi-cylindrical re-l cesses adjacent its topand rotary conveyors disposed in said recesses and projecting somewhattherefrom for engaging andmoving snow ii itis of great depth and meansfor driving said conveyors, y

3.` Asnow plow having a moldboard with surfaces extending outwardly andrearwardly, said f. moldbcard extendingupwardly for a consider-y abledistance wherebyjsnow yof small depth may ,be discharged laterally by`said moldboard and rtary conveyors having helical blades thereondisposed adjacent the top of said moldboard and ex-l tending outwardlyandy rearwardly from the cen- `-tral portion thereof for engaging andmoving snow if itis oigreat depth and means for driving" saidconveyors.1

y ing.

'4. 1A snowjplowf-having a-nioldboardwith surthe front "thereoi, saidmoldboard extending upwardlyiora yconsiderable distance whereby snow oflsmall depthinay be discharged laterally by said moldb'oardgsaidmoldboard having recesses at its top extending rearwardlyv therein,bearings adjacent the ycenter of said moldboard and at the outerendsfthereof, shafts ljournalled in said bearings and extendingl fromadjacent the' center of said moldboard laterally and rearwardly,lar'i-drhelical'blades carried by said shaft disposed partially in (saidrecesses -and means for driving rsaid conveyors for engaging and movingsnow toward the center of4 said moldboard if said snow is 'of greatdepth.

5. A snow plow lhaving a moldboard extending outwardly and rearwardlythrough the center thereof, said `moldboard extending upwardly for j avconsiderable distance whereby snow of small depthmay be' dischargedlaterally by said moldboard, a casing having a chamber therein at thecentral top portion' vof said moldbo'ardand at the rear thereof,conveyors extending along 'the' top of said lmoldboard at either sidethereof for engaging and moving snow if it is of great depth, means fordriving said conveyors for moving said snow inwardly and discharging thesame in said chamber.` 1

6. The structure set forth rin claim 5, said faces extending youtwardlyand-rearwardly from chamber having `a discharge opening at' its top,

a swinging deflector adapted to bev disposed in opposite, positions andmeans =in said chamber for propelling snow therefrom through saidopenupwardly for a considerable distance whereby snow of small depthlmay be discharged laterally moldboard extending outwardly and rearwardlyalong the same, .helical blades forming conveyors carried by 'saidshafts, a chamber in the rear of said moldboard, means for driving saidshafts for engaging snow by said conveyors and moving the same into saidchamber if said snow is of great depth, a shait adapted to be connectedto a motor on a propelling vehicle for said plow, gears secured to saidrst mentioned shafts, and gears driven by said last mentioned shaft fordriving said first mentioned shafts and conveyors.

8. A snow plow having in combination, a moldboard for discharging snowoutwardly and laterally, said moldboard being of considerable height,conveyors atthe top of said moldboard for engaging snow if it is ofgreat depth, a casing in the rear of said moldboard at the top thereofhavving a chamber therein to which snow is moved opposite directionsvrespectively in accordance with the position of said deector.

` 9. -A snow'plow having a moldboardextending outwardly and rearwardlyfrom acentral ver'- tically extending line, said` moldboard extendingupwardlyfor a considerable distance whereby snow of small 'depth may bedischarged laterally by said moldboard, a pair of rotary conveyorsdisposed adjacent the top oi said moldboard and ex- ',40 by saidmoldboard, shafts adjacent the top of said tending longitudinally ofsaid mold board lin oping upwardly for a considerable distance wherev bysnow of small depth may be discharged laterallyby said moldboard, arotary conveyor disposed adjacent the top of said moldboard andextending along the same substantially parallel to the surface thereoffor engaging and moving snow if it is of great depth and means fordriving said conveyor. l

11. A snow plow having a moldboard extending outwardly and rearwardlyfrom its central portion, plates extending in a substantially verticalplane at the outer sides of said moldboard and adapted to out throughthe snow to form a regular bank at the edge of the swath madeA by saidplow, and means for holding said plates in differmade thereby,

12. A snowplow having a moldboard with a means for Idriving saidconveyors.'

surface extending laterally and rearwardlyzfrom its central portionalong which the snow ismoved to the outer side of said moldboard, lacutter member extending in a plane at the outer side of said moldboardinclined slightly to vthe vertical, andai;l

means for varying the positionA .of said cutterV` so that a cut ofgreater or less depthisvmade; i 13. A snow plow yhaving a mold boardextending outwardlyan-d rearwardly from a central vertically extendingline, said nfioldboayrd'extendingkfl()y upwardly for a considerabledistance whereby snow of small depth may be discharged laterally v bysaid moldboard and rotaryconveyors"dis-- posed adjacent the topofsaidmoldboard but?.

below the top edge thereof and ei'rterio'llnflg,"along"V1 said moldboardin opposite directions respectively for engaging and moving snow alongsaid` 4 mold board if said snowis of great "depth and 14. The structureset forth in claim 13, said`VV moldboard at its top kextendingaboutfthe; rear of said conveyors and partially over thetopttherel* iof, f y ARCHIE O". WILLIAMSON@

